Published October 1, 2007 | Version v1
Journal article Metadata-only

Effects of rare earth doping on the superconducting properties of MgB2

Creators

  • 1. Department of Applied Chemistry, School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)

Description

Doping effects of rare earth oxides (REOy: RE = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) on the superconducting properties of MgB2 were investigated. Large fraction of the added RE turned into impurity phases: REB6 for RE = La-Gd and Yb, and REB4 for RE = Tb-Tm and Lu. We observed an increase in c-axis length from 3.523 to 3.533 A when doped with Lu. Clear decreases in transition temperatures were observed in samples doped with Sm, Eu, Gd, Tm, Yb and Lu, indicating that these elements were successfully substituted for Mg. The decreases in Tc were most drastic in Yb-doped samples (Tc ∼ 32 K)

Availability note (English)

Available from http://dx.doi.org/10.1016/j.physc.2007.04.250

Additional details

Identifiers

DOI
10.1016/j.physc.2007.04.250;
PII
S0921-4534(07)00785-X;

Publishing Information

Journal Title
Physica. C, Superconductivity
Journal Volume
463-465
Journal Page Range
p. 225-228
ISSN
0921-4534
CODEN
PHYCE6

Conference

Title
19. international symposium on superconductivity
Acronym
ISS 2006
Dates
30 Oct - 1 Nov 2006
Place
Nagoya (Japan)

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39073493
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CRITICAL CURRENT; DOPED MATERIALS; DYSPROSIUM; ERBIUM; EUROPIUM; GADOLINIUM; HIGH-TC SUPERCONDUCTORS; HOLMIUM; IMPURITIES; INTERATOMIC DISTANCES; LANTHANUM; LUTETIUM; MAGNESIUM BORIDES; NEODYMIUM; OXIDES; PRASEODYMIUM; RARE EARTH ADDITIONS; RARE EARTHS; SAMARIUM; SUPERCONDUCTORS; TERBIUM; THULIUM; TRANSITION TEMPERATURE; YTTERBIUM
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ALLOYS; BORIDES; BORON COMPOUNDS; CHALCOGENIDES; CURRENTS; DISTANCE; ELECTRIC CURRENTS; ELEMENTS; MAGNESIUM COMPOUNDS; MATERIALS; METALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH ALLOYS; RARE EARTHS; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TYPE-II SUPERCONDUCTORS

Optional Information

Copyright
Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.